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[Bug 1909187] Re: perf_event_open02 from ubuntu_ltp_syscalls failed on F-aws / B-oracle-5.4 with specific instance

 

Seen on j/fips with version 5.15.0-86.96+fips1 during cycle 2023.09.04
on arm64 openstack instance.

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https://bugs.launchpad.net/bugs/1909187

Title:
  perf_event_open02 from ubuntu_ltp_syscalls failed on F-aws /
  B-oracle-5.4 with specific instance

Status in ubuntu-kernel-tests:
  New

Bug description:
  Issue found with Focal AWS 5.4.0-1034.35, exclusively on a1.medium

  Fail rate: 2/2

  Test failed with:
   startup='Wed Dec 23 18:40:58 2020'
   tst_test.c:1261: TINFO: Timeout per run is 0h 05m 00s
   perf_event_open02.c:130: TINFO: bench_work estimated loops = 5715 in 500 ms
   perf_event_open02.c:175: TINFO: [0] value:2287744246 time_enabled:500058840 time_running:500058840
   perf_event_open02.c:175: TINFO: [1] value:2287708056 time_enabled:500381232 time_running:500381232
   perf_event_open02.c:175: TINFO: [2] value:2289974062 time_enabled:504715896 time_running:504715896
   perf_event_open02.c:175: TINFO: [3] value:1715806060 time_enabled:532575876 time_running:399201912
   perf_event_open02.c:334: TINFO: nhw: 3, overall task clock: 4233846396
   perf_event_open02.c:335: TINFO: hw sum: 54940303470, task clock sum: 12702998172
   perf_event_open02.c:347: TINFO: ratio: 3.000345
   perf_event_open02.c:349: TFAIL: test failed (ratio was greater than 3)

   Summary:
   passed 0
   failed 1
   broken 0
   skipped 0
   warnings 0
   tag=perf_event_open02 stime=1608748858 dur=9 exit=exited stat=1 core=no cu=881 cs=0

  As I can't see this failure on other ARM instances and not on B-5.4
  AWS, I won't call this a regression.

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